Automated page. Written and translated automatically by AI and checked against the sources by software; no human editor. SI-IQ is an index built from public benchmark results, not an IQ test. How it works
How smart is GPT-5.4 Pro?
GPT-5.4 Pro is a model from OpenAI, released on Mar 5, 2026. Its SI-IQ is 135 (90% interval 131–138), estimated from 5 benchmark results by 1 independent evaluators. Its strongest area is Knowledge and its weakest is Math.
This model has fewer than 5 independent benchmark results or fewer than 2 different evaluators, so it is shown but not ranked.
Facts
- Developer
- OpenAI
- Released
- Mar 5, 2026
- Access
- API access
- Benchmarks used
- 5 results from 1 evaluators
Ability by area (SI-IQ, 90% interval)
Every benchmark result we used
Each score is one value exactly as the source published it: for Epoch AI the best of its run settings, for OpenRouter the median hosting provider (the developer's own hosting when it ran the test). “Implied SI-IQ” is the ability that this single result points to; the overall SI-IQ is their precision-weighted average.
| Benchmark | Score | Evaluated by | Source |
|---|---|---|---|
| Chess Puzzles | 59.0% | Epoch AI | Epoch AI Benchmarking Hub · data file |
| FrontierMath Tier 4 | 58.5% | Epoch AI | Epoch AI Benchmarking Hub · data file |
| FrontierMath Tiers 1–3 | 82.5% | Epoch AI | Epoch AI Benchmarking Hub · data file |
| GPQA Diamond | 94.6% | Epoch AI | Epoch AI Benchmarking Hub · data file |
| SimpleQA Verified | 46.3% | Epoch AI | Epoch AI Benchmarking Hub · data file |
Computed with SI-IQ method version 1.0.0. Read the full methodology
Data sources: Epoch AI, ‘Capabilities & benchmarking’ (CC BY 4.0).